Remove hostname requirement in `/etc/hosts`

pkg/agent/config/config.go

@@ -396,19 +396,3 @@ func getConfig(info *clientaccess.Info) (*config.Control, error) {
 	controlControl := &config.Control{}
 	return controlControl, json.Unmarshal(data, controlControl)
 }
-
-func HostnameCheck(cfg cmds.Agent) error {
-	hostname, _, err := getHostnameAndIP(cfg)
-	if err != nil {
-		return err
-	}
-	for i := 0; i < 5; i++ {
-		_, err = sysnet.LookupHost(hostname)
-		if err == nil {
-			return nil
-		}
-		logrus.Infof("Waiting for hostname %s to be resolvable: %v", hostname, err)
-		time.Sleep(time.Second * 3)
-	}
-	return fmt.Errorf("Timed out waiting for hostname %s to be resolvable: %v", hostname, err)
-}

pkg/agent/run.go

@@ -25,10 +25,6 @@ import (
 func run(ctx context.Context, cfg cmds.Agent, lb *loadbalancer.LoadBalancer) error {
 	nodeConfig := config.Get(ctx, cfg)
 
-	if err := config.HostnameCheck(cfg); err != nil {
-		return err
-	}
-
 	if !nodeConfig.NoFlannel {
 		if err := flannel.Prepare(ctx, nodeConfig); err != nil {
 			return err

pkg/agent/templates/templates.go

@@ -17,7 +17,7 @@ const ContainerdConfigTemplate = `
 path = "{{ .NodeConfig.Containerd.Opt }}"
 
 [plugins.cri]
-stream_server_address = "{{ .NodeConfig.AgentConfig.NodeName }}"
+stream_server_address = "127.0.0.1"
 stream_server_port = "10010"
 
 {{- if .IsRunningInUserNS }}